Question

Why was it difficult for people to accept a heliocentric concept of the solar system?

Scientists had no way to explain retrograde motion.
Scientists did not check or confirm other scientists’ ideas.
Information was published in Italian and people could not understand it.
Aristotle was famous and his ideas were supported by religious teachings.

Answer 1

Aristotle was famous and his ideas were supported by religious teachings.

Heliocentrism is the astronomical model in which the Earth and planets revolve around the Sun at the center of the Universe. Historically, heliocentrism was opposed to geocentrism, which placed the Earth at the center. The notion that the Earth revolves around the Sun had been proposed as early as the 3rd century BC by Aristarchus of Samos,[1] but at least in the medieval world, Aristarchus' heliocentrism attracted little attention—possibly because of the loss of scientific works of the Hellenistic period.

It was not until the 16th century that a mathematical model of a heliocentric system was presented, by the Renaissance mathematician, astronomer, and Catholic cleric Nicolaus Copernicus, leading to the Copernican Revolution. In the following century, Johannes Kepler introduced elliptical orbits, and Galileo Galilei presented supporting observations made using a telescope.

With the observations of William Herschel, Friedrich Bessel, and other astronomers, it was realized that the Sun, while near the barycenter of the Solar System, was not at any center of the Universe.

Answer 2

Because its proponents were unable to explain why the relative locations of the stars.

• It seemed to stay the same despite the Earth's shifting perspectives as it rotated around the Sun, the heliocentric, or Sun-centered, version of the planetary system was never widely accepted.
• Claudius Ptolemy who lived in Alexandria proposed in the second century AD that this disparity would be reconciled if it were thought that the Earth was set in position while the Sun as well as other bodies rotated around it.
• As a consequence, for over 1,400 years, Ptolemy's geocentric (Earth-centered) paradigm dominated scientific thinking.
• Two centuries later, Aristarchus elaborated on this idea by claiming that the Sun, as well as the Earth and other planets, circled around a certain central figure.

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